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|
--
-- expression evaluation tests that don't fit into a more specific file
--
--
-- Tests for SQLVAlueFunction
--
-- current_date (always matches because of transactional behaviour)
SELECT date(now())::text = current_date::text;
?column?
----------
t
(1 row)
-- current_time / localtime
SELECT now()::timetz::text = current_time::text;
?column?
----------
t
(1 row)
SELECT now()::timetz(4)::text = current_time(4)::text;
?column?
----------
t
(1 row)
SELECT now()::time::text = localtime::text;
?column?
----------
t
(1 row)
SELECT now()::time(3)::text = localtime(3)::text;
?column?
----------
t
(1 row)
-- current_timestamp / localtimestamp (always matches because of transactional behaviour)
SELECT current_timestamp = NOW();
?column?
----------
t
(1 row)
-- precision
SELECT length(current_timestamp::text) >= length(current_timestamp(0)::text);
?column?
----------
t
(1 row)
-- localtimestamp
SELECT now()::timestamp::text = localtimestamp::text;
?column?
----------
t
(1 row)
-- current_role/user/user is tested in rolnames.sql
-- current database / catalog
SELECT current_catalog = current_database();
?column?
----------
t
(1 row)
-- current_schema
SELECT current_schema;
current_schema
----------------
public
(1 row)
SET search_path = 'notme';
SELECT current_schema;
current_schema
----------------
(1 row)
SET search_path = 'pg_catalog';
SELECT current_schema;
current_schema
----------------
pg_catalog
(1 row)
RESET search_path;
--
-- Tests for BETWEEN
--
explain (costs off)
select count(*) from date_tbl
where f1 between '1997-01-01' and '1998-01-01';
QUERY PLAN
-----------------------------------------------------------------------------
Aggregate
-> Seq Scan on date_tbl
Filter: ((f1 >= '01-01-1997'::date) AND (f1 <= '01-01-1998'::date))
(3 rows)
select count(*) from date_tbl
where f1 between '1997-01-01' and '1998-01-01';
count
-------
3
(1 row)
explain (costs off)
select count(*) from date_tbl
where f1 not between '1997-01-01' and '1998-01-01';
QUERY PLAN
--------------------------------------------------------------------------
Aggregate
-> Seq Scan on date_tbl
Filter: ((f1 < '01-01-1997'::date) OR (f1 > '01-01-1998'::date))
(3 rows)
select count(*) from date_tbl
where f1 not between '1997-01-01' and '1998-01-01';
count
-------
12
(1 row)
explain (costs off)
select count(*) from date_tbl
where f1 between symmetric '1997-01-01' and '1998-01-01';
QUERY PLAN
----------------------------------------------------------------------------------------------------------------------------------------------
Aggregate
-> Seq Scan on date_tbl
Filter: (((f1 >= '01-01-1997'::date) AND (f1 <= '01-01-1998'::date)) OR ((f1 >= '01-01-1998'::date) AND (f1 <= '01-01-1997'::date)))
(3 rows)
select count(*) from date_tbl
where f1 between symmetric '1997-01-01' and '1998-01-01';
count
-------
3
(1 row)
explain (costs off)
select count(*) from date_tbl
where f1 not between symmetric '1997-01-01' and '1998-01-01';
QUERY PLAN
-----------------------------------------------------------------------------------------------------------------------------------------
Aggregate
-> Seq Scan on date_tbl
Filter: (((f1 < '01-01-1997'::date) OR (f1 > '01-01-1998'::date)) AND ((f1 < '01-01-1998'::date) OR (f1 > '01-01-1997'::date)))
(3 rows)
select count(*) from date_tbl
where f1 not between symmetric '1997-01-01' and '1998-01-01';
count
-------
12
(1 row)
|
